Can implantation bleeding be brown then turn red the same day?

Implantation bleeding is usually light and short-lived, lasting only a few days. It can range in color from light pink or brown to dark red. Implantation bleeding is caused by the fertilized egg implanting in the lining of the uterus, which can cause a small amount of bleeding or spotting. The color of implantation bleeding can vary depending on the amount of bleeding and the amount of time that has passed since the egg implanted. Therefore, it is possible for implantation bleeding to start as brown and turn red the same day.